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When You Throw a Pebble Straight Up with Initial Speed $\sqrt { 2 } V$

Question 152

Multiple Choice

When you throw a pebble straight up with initial speed V, it reaches a maximum height H with no air resistance. At what speed should you throw it up vertically so it will go twice as high?

A) 2 V
B) 8 V
C) $\sqrt { 2 } V$
D) 4 V
E) 16 V

When You Throw a Pebble Straight Up with Initial Speed 2V\sqrt { 2 } V2​V

Multiple Choice

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When You Throw a Pebble Straight Up with Initial Speed $\sqrt { 2 } V$

Correct Answer:
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